using namespace std;
#include<iostream>

class A

{

public:

	void f() { cout << "A::f()" << endl; }

	int a;

};



class B : public A

{

public:

	void f(int a) { cout << "B::f()" << endl; }

	int a;

};



int main()

{

	B b;

	//b.f();

	return 0;

}